Patent SG-11201806955Q-A (SG)
Title: Apparatus and method for stereo filling in multichannel coding
Inventor: DICK SASCHA
IPC: G10L19/028
Filed: 2017-02-14
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 11111111011110111010101111101011111011101011101101110111011101111101111011111 International Bureau ... .... ..Yjd ..... ....!;,„. (10) International Publication Number (43) International Publication Date WO 2017/140666 Al 24 August 2017 (24.08.2017) WI P0 I P CT (51) International Patent Classification: (74) Agents: SCHAIRER, Oliver et al.; Schoppe, Zimmer- G10L 19/008 (2013.01) G1OL 19/028 (2013.01) mann, Stockeler, Zinkler, Schenk & Partner mbB, Radlkoferstr. 2, 81373 Miinchen (DE). (21) International Application Number: PCT/EP2017/053272 (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (22) International Filing Date: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, 14 February 2017 (14.02.2017) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, (25) Filing Language: English DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, (26) Publication Language: English KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (30) Priority Data: MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, 16156209.5 17 February 2016 (17.02.2016) EP NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, (71) Applicants: FRAUNHOFER-GESELLSCHAFT ZUR TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, FOERDERUNG DER ANGEWANDTEN ZA, ZM, ZW. FORSCHUNG E.V. [DE/DE]; HansastraBe 27c, 80686 Miinchen (DE). FRIEDRICH-ALEXANDER-UNI- (84) Designated States (unless otherwise indicated, for every VERSITAET ERLANGEN-NUERNBERG [DE/DE]; kind of regional protection available): ARIPO (BW, GH, Schlossplatz 4, 91054 Erlangen (DE). GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (72) Inventors: DICK, Sascha; Schupferstrasse 49, 90482 TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, Nilrnberg (DE). HELMRICH, Christian; Fraunhoferstr. DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, 21, 10587 Berlin (DE). RETTELBACH, Nikolaus; Spess- LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, artstr. 38, 90427 Nlirnberg (DE). SCHUH, Florian; Eich- SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, enwaldstr. 9, 90513 Zirndorf (DE). FUEG, Richard; GW, KM, ML, MR, NE, SN, TD, TG). Kirchenweg 26, 90419 Nlirnberg (DE). NAGEL, Fre- derik; Welserstr. 22, 90562 Heroldsberg (DE). Published: — with international search report (Art. 21(3)) = (54) Title: APPARATUS AND METHOD FOR STEREO FILLING IN MULTICHANNEL CODING 212 202 204 201 ) channel decoder' multichannel processor P1\" 07 D1 .,• ... (optional) P2* . ÷ (optional) P3 P4* --- CH1 •• input ntelace E2 206 : 1 .1 I 206 3 ')-----, P 206_2 . , D2 D # 208 1' 1 210 \"---, CH2.. CH3 0. MCH PAR2 MCH_PAR1 (optional) 11 noise filling module ----220 0 Fig. la 71' (57) : An apparatus for decoding an encoded multichannel signal of a current frame to obtain three or more current audio 1-1 ---- output channels is provided. A multichannel processor is adapted to select two decoded channels from three or more decoded chan- nels depending on first multichannel parameters. Moreover, the multichannel processor is adapted to generate a first group of two or 1-1 O more processed channels based on said selected channels. A noise filling module is adapted to identify for at least one of the selected N channels, one or more frequency bands, within which all spectral lines are quantized to zero, and to generate a mixing channel using, 0depending on side information, a proper subset of three or more previous audio output channels that have been decoded, and to fill ,-t the spectral lines of frequency bands, within which all spectral lines are quantized to zero, with noise generated using spectral lines of the mixing channel.